. >> cal trens accepted the bolts though a sample failed aichl crucial test five years ago. still, an official signed off on the bolts as is. >> a mechanical and material engineer, an expert in determining why steel fails. >> they did it, it failed. you know? they mentioned this is third incident since november, 2007. >> caltrans claims to learn from past mistakes. >> this is not identified before utilizing this and developed a longer list we'll subject future bolts to, going forward. >> now, initial estimates of the bolt fix would cost just $1 million were dismissed today as quote, premature. they hope to have a real estimate and a solutior the retro fit may 8th. >> a house fire in petaluma through out heat until firefighters managed to get it under control. crew arrived to find the garage engulfed in flames. only injuries reported was a fireman suffering a steam burn to the arm. what sparked the fire is unclear. reports that are one two of dogs survived. one of stwo sisters are accused of abusive swaddling of babies. 35-year-old and 33-year-old face three counts each. poli